Contra Costa County property record for 1600 S Main St, Walnut Creek, CA 94596
| Property Type | Commercial Office |
|---|---|
| Details | 61,104 sqft · built 1983 |
| Lot Size | 3.87 acres (168,751 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $207,566 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 183-050-022-7 |
| Primary APN | 183-050-022-7 |
|---|---|
| Alternative APN |
|
| Total Rooms | 21 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 61,104 sqft Gross Area |
| 1st Floor Area | 61,104 sqft |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1984 |
| Lot Area | 168,751 sqft |
| Street Address | 1600 S MAIN ST |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-5340 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | WEBB TRACT POR LOT 7 |
| Legal Subdivision | WEBB |
| Legal Lot Number | 7 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 339001 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 1221 FRANQUETTE AVE, CONCORD, CA 94520-5213 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 15, 2000 |
| Deed Sale | Mar 15, 2000 |
| Deed Document Number | 200051415 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Walnut Creek Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $18,072,000 (-) Land $4,454,200 Building $13,617,800 | |
| 2025 | $207,566.00 (-13.9%) | $18,072,000 (-15.28%) Land $4,454,200 Building $13,617,800 |
| 2023 | $241,086.00 (+2.33%) | $21,331,734 Land $5,257,733 Building $16,074,001 |
| 2022 | $235,592.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 2 (1982) |
| Most Recent Claim | Jan 1982 · Severe Storms, Flood, Mudslides & High Tide |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 243 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks.
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